Question

What is the value of x?

Answer 1

x = 15°

Explanation:

79 = 5x + 4

-4 -4

(75 = 5x) ÷ 5

15°=x

Answer 2

x = 15

Explanation:

The 79° angle and the angle labeled (5x + 4)° are equal because they are vertically opposite. Therefore, we can equate them and solve the resulting equation:

5x + 4 = 79

⇒ 5x - 4 = 79 - 4 [Subtracting 4 from both sides]

⇒ 5x = 75

⇒ x =
`(75)/(5)` [Dividing both sides by 5]

⇒ x = 15